@article{ref1,
title="Biological threshold of impairment drugs in industrial performance",
journal="Activitas nervosa superior",
year="1973",
author="Hine, C. H.",
volume="15",
number="4",
pages="266-268",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-7604",
doi="",
url="http://dx.doi.org/"
}